Control means for air actuated motors



May 31, 1938. E. s. CORNELL, JR y 2,118,809'

.l CONTROL MEANS FOR AIR ACTUATED MOTORS Filed MaICh 25., 1935 v 2 Sheets-$1166.13 l

FTE. Trp. l; I; .E6 Z5 27 Z 58 3G 55 32; g4 ZO AZ3" 8 4 3G `52,2441 24h Z4 Z Egg/@g INVENTOR` EDWARD 5. CORNELLJR.

HIS ORNEY May31,1938 ESCORNELLJR. 2,118,809

CONTROL MEAS FOR AIR ACTUATED MOTORS.

.Filed March 25,/ 1935 2 sheets-sheet 2.

'lNvN-ro, EDWARD S. CORNELL,JR.

A@ 55 Hl TORNEY ranma may ai, ieee GNTRIL MEANS FOR MR GTUATEU MTORS lEdward S. Cornell, llt.. Larchmont, N. Y.. assignor to American Radiatori' Company, New Work, N. Y.; a corporation of New .lersey Application March 25,

3 Claims.

This invention relates to control means for air actuated motors.

In my copending application Serial No. 606,878 entitled Auto heating system, filed April 22nd, 5 1932, now Patent No. 2,081,696, granted May 25,

1937, I set forth the assembly of a suitable heating unit such as a set of coils supplied with heated water diverted under control from the cooling system of the tractive motor of an automobile, an air motor actuated under vpressure differential, such as the pressure differential induced in the intake manifold of the tractive motor, a fan actuated by the air motor for projecting air in heat exchange relation with the r heating unit, and a manually operated control 'valve for regulating the pressure differential effective upon the air motor, to thereby control the eective heat supplied to the interior of the automobile. In my aforesaid copending application, inter alia, I disclose the control valve as connected by suitable piping means between the intake manifold of the tractive motor and the discharge of the air motor, the intake of the air motor communicating with the atmosphere in suitable manner, either with the interior ofl the automobile or with the interior of the hood compartment.

In my aforesaid copending application, I also disclose the disposition of the control valve in the intake connection of the airfmotor, that is to say, between the atmosphere and the intake of the air motor.

In such various assemblies, the setting of the 'movable-element of the control valve regulates the eective air flow between the intake and the discharge of the air motor, operative upon the rotor of the air motor, whereby the rotor is varied in speed and thereby varying the speed of rotation of the fan and therewith the rate of projection of the air in vheat exchange` relation with' the coils or other heating element 4of the heating unit. I

The invention of my present4 application gen-v erally is the assembly of a suitable control valve with the above or other approved appurtenant,4

parts for regulating the operation of the air motor under pressure diierential induced in the intake manifold or otherwise by the tractive motor, such pressure differential being subject to variation incidental to the normal operation of varied drive of the automobile including idling of the tractive motor.

Moire particularly, the present invention is directed to the provision through the intermediation of the control means of air ow into the intake manifold or equivalent of the tractive motor during the stage of non-operation of the air motor, for purposes of simplicity of the setting of the carburetor and eiliciency of action of the resultant gasoline-air emulsion iiuid.

1933, Serial No. 662,'122

(Cl. Gil-60) Further features and objects of theinvention will be more fully understood from the following detail description and the laccompanying drawings, in which- Fig. l is a side elevation of `an assembly embodying my invention applicable to the heating of the interior ,of an automobile, the control valve being illustrated as disposed in the intake line of the air motor. Fig. 2 is a central vertical section on line 2 2 of Fig. 1, on an enlarged scale; the movable valve member in this ligure is shown in a full open position. Fig. 3 isa side elevation of Fig. 2, the movable valve being shown in its full stop position. Fig. 4 is a front elevation of Fig. 3 showing the indicator and handle of the movable valve.

Fig. 5 is a side elevation of an assembly illustrating another embodiment of my invention, both in detail construction of the control valve and the manner of interconnection of the samev relative to the remaining parts of the assembly; the invention is also illustrated in connection with the heating of an automobile. Fig. 6 is a vertical sectional' elevation of the control valve shown in Fig. 5, on an enlarged scale. Fig. 7 is a detail sectional elevation on line 'I--l of Fig. 6. Fig. 8 is a detail sectional elevation corresponding to Fig. '7, but showing the movable valve member in another position.

Referring to the assembly and parts thereof illustrated in Figs. 1', 2, 3 and 4, in a system for eiecting the heating of theinterior of'the automobile, It designates the tractive motor, of the explosive type, the intake vmanifold. of which is indicated at II, its carburetor at I2; I3 indicates a passage of the water cooling system of the tractive motor.

The air motor is indicated at I6 and may be of any suitable construction. An advantageous construction is disclosed in my copending application, Serial No. 623,697, filed July 21st,l 1932, entitled Air motor, nowl U. S. Patent No. 1,926,528, granted September l2, 1933. The intake of the air motor is designated at I5 and its discharge at I6. In general, the air motor comprises a rotor or other movable part displaced under differential pressure between its intake I5 and its discharge I6 effected by corresponding air ow. f

In the embodiment illustrated in Fig. 1, the differential pressure is illustrated as induced by the intake manifold or other appurtenant part, eiiective in the normal operation of an explosive type of engine; to attain such purpose the discharge I6 of the air motor Il is connected by the piping Il to a bushing I8 tapped in the riser Ila of the intake manifold II.

In carrying out certain phases of my invention the air motor may be employed for operating a fan or equivalent for effecting general projection or circulation of the air irrespective of heat exchange relation with the heater unit;v such arrangement functions to project or circulate the air within the interior of the automobile while affording the windshield and other windows of the automobile to remain closed.

The operation of the air motor |4 as illus- 3 trated in Fig. 1, is controlled by the control means shown in Fig. 1 in the form lof a valve 28,

' means 28 may be of the valve type, comprising a equipped with a manual setting member 2|; the control means is shown connected by piping 22 with the intake |5 of the air motor I As is illustrated in Figs. 2, 3 and 4, the control valve body` 23 is provided'withA an enlarged or anged projecting portion 26 adapted to engage the inner face of the plate 25, and anouter plate 21 also of enlarged diameter secured by screw threaded connection, see 28, or other adjustable clamping means.

The. movable valve 24 is preferably mounted within the hollow valve body 23 to displace its valve end portion 24a from off to hot, or equivalent, by turning movement of the setting member 2| less than a full circumference. To at tain such relationship the movable valve member 24 is provided with a suitable worm threading 24h mating with the corresponding threaded groove 23a.

Fig. @illustrates the outer plate 21 bearing suitable notations indicative of operative positions of the manual setting device 2|, viz., oi at 29, hot at 30, and "warm at 3|. Anyvother form of notations maybe employed, and any other suitable manner of operation of the movable valve 24 and its setting arm 2| may be employed.

'I'he valve seat of the hollow valve.23 is indicated at 32; the intake opening of the valve body is indicated at 33. The discharge opening 34 of the valve bodyis connected to the endof the piping 22 by any suitable means, as by a flared compression joint 35. Theintake 33 may communicate directly with the atmosphere of the interior of the automobile body, or may be ccnnected by piping 36 to communicate with the interior of the hood compartment 31;

p air motor and appurtenant parts ensues, namely,

by air flow through the valve intake 33, thence through its discharge 34, piping 22,airmotor intake I5, into and through the interior of the airmotor casing, thereby actuating its rotor and rotor shaft, thence through the air-motor'discharge I8, piping |1 into the tractive motor intake manifold Upon turning the movable valve member 24 from its hot position toward its .o position,

Y compare Figs. 2 and 3,-its valve end 24a serves to graduately more and more restrict the rate take |5 of the air'motor .I4

-of the control means 48;

Whether connected directly with the atmosphere or inple 48a.

'its priming device, of the tractive motor properly adjusted for the inilow of air into the manifold.

To meet such condition, see Fig. 3, the eective face of the valve seat 32 is related to the movable valve end 24a to provide a preferably predetermined leakage of air therebetween at "oii.' position, the extent of such air bleed" being'practically insuilicient to operate the air motor.

As indicated in Figs. 2 and 3, the movable valve member 24 is limited in displacement toward its oif position by engagement of the head of its manual setting member 2| with the valve housing plate 25; such bleed relation may as also indicated in- Figs. 2-and 3, be had by noncoincident contour and dimensions, i. e., concave arcuate contour for the valve seat 32 and conical contour and lesser dimensions of the valve end 24a, and/or by an inner stop eifected by discontinuance of'tlre thread groove 23a, for positively limiting the inward movement of the movable valve member 24.

In the embodiment, shown in side elevation in Fig. 5, the control means 48 Ais disposed intermediate the source of pressure diiferential and the air motor.' Preferably, and as is indicated generally in Fig. 5 and in detail in Figs. 6, 7, and 8, the control means provides for air flow through the piping for all positions of control of the control means, the eiective air iow through the air motor being regulated for the positions o1' its setting from olf to hot.

The parts illustrated in Fig. 5 comprise the ini A communicating with the atmosphere, either directly, that is to say, with the interior of the automobile body, or as shown, through the piping 4| with the interior 31 of the hood compartment, and preferably with a strainer 38. 'I'he discharge |6 of the air motor is connected by piping 42 the intake 40h of the control means communicates either directly with the atmosphere, that is, with the interior of the automobile body, or as shown, by piping 43 leading to the interior of the hood compartment 31, preferably through a strainer 38.

The actuation of the'air motor |4, under control of the control means 40 is shown eifected by connection of the piping 44 communicating at its one end through the bushing I8 with theinterior of the riser |.|a of the intake manifold of the tractive motor I0 and its opposite end through the discharge nipple 4||c with the interior of the control means 48.

with the intake Illa In general, and as illustrated in Figs. 6, '1 and 8, the control means comprises a hollow body 45, the lower interior port-ion 4B, provided` with a discharge nipple 40c; the upper interior of the hollow body 45 comprises two portions 41, 48, separated by a vertical septum 49; the interior portion 41 is provided with an inlet nipple 48h, and the interior portion 48 is provided with an inlet nip- The movable valve member 58 is shown rotatively mounted within the cylindrical opening 5| of the septum 52, dividing therespective upper interior portions 41 and 48 from the lower inperforation 55, for similar cooperation with Vthe ports 54, 54.

Accordingly, in the position of the movable valve member as is illustrated in. Fig. 6,

namely, full registration of perforation 55 with the ports 53, 53, pressure differential induced in the piping 44 is effective wholly and solely through the piping 43. This position of the manual setting member 2| of the movable valve member 50 shown in Figs. 6 and 7, corresponds to its,

oi position, whereby the differential pressure induced through the piping 44 effects a bleedv of the air through the control means without operation ofthe motor. U

Upon turning the movable valve member by its manual setting member 2l from its off position shown in Figs. 6 and 7, the extent of communication of the ports 53, 53 through the perforation 55 is restricted, see Fig. 8, to greater and greater .degree and communication effected to greater and greater degree between the ports 54, 54, through the perforation 56, thus gradually decreasing the air flow through the piping'43 and gradually increasing the air iiow through the piping 44. Continued turning of the manual setting member to "hot effects full registration of the perforation 56 with the ports 54, 54, at which stage full actuation of the air-motor ensues and the air inilow through the nipple 40h is nil.

In such most preferred embodiments of my invention, the assembly of the movable valve member 50 having the periorations 55, 56 or other channels of communication, and the associated ports 53, 53 and 54, 54 may be arranged and dimensioned to provide for substantially uniform air flow into the air intake manifold o'f the tractive motor throughout the range of operation of the air motor, inclusive of its stage of non-operation.

From the above, it appears that my invention provides for the assembly with a rsuitable source of differential pressure andan air-motor,of control means for regulating the effective air flow through' the airmotor and therewith the degree or extent of Vactuation of the airv motor.

The provision of an air bleed is particularly applicable to differential pressure effective with-- in th`e intake manifold of an explosive engine, or otherwise responsive to the rate of operation of the tractive'motor, and subject to variations in' pressure arising from. varied rate of operation in the normal drive of the vehicle, whereby-corresponding variations of pressure diierential are A effective upon the rotor or -other displaced memusei'ulfor the actuation of a fan 50,

tion with a heater unit or for airncirculating purposes,` or both. Advantageously, the heater unit, as indicated l in Fig. 1, may be of the socalled hotwatertype, and may comprise a set of coil elements interconnected at top and bottom by suitable headers, see Bla, Mb, which may be respectively connected by the hose or other piping 62, 63, with suitable passages of the water cooling system of the tractive motor I0. However, the heatercunit may be'heated by any other suitable medium, or other suitable mode 'of supply of heating medium may be employed.

Whereas-I have described my invention byv reference to speciilc forms thereof, it will be understood that many changes and modiiications may be made without departing from the spirit of the invention.

I claim:

1. kIn combination withan automotive vehicle having an internal combustionengine provided `with a carburetor and an intake manifold leading from the carburetor to the combustion chamber or chambers of the vinternal combustion engine, of a variable speed air motor provided with intake and outlet ports, tubing connecting the out-take 'of said air motor with said intake manifold of the internal combustion engine, and valve Y means associated with said air Amotor for regulating the speed of said air motor, said valve vmeans including means for eecting iioW of air through said valve means into said intake manifold at all stages of `operation ofsaid air motor including the stage of full operation ofthe air motor and meansY for limiting the movement of the movable element of said valve means at the stage of non-operation of said air motor to ci .rd

flow of air through said tubing.

2. In combination with an automotive vehicle havingan internal combustion engine provided with a carburetor and an intake manifold leading from the carburetor to the combustion chamber or chambers of the internal combustion engine, of a variable speed air motor provided with intake and outlet ports, tubing connecting the out-take of said air motor with said intake manifold of th internal combustion engine, and valve means associated with said air motor for regulating the speed of said air motor, said valve means including means for effecting substantial- 1y uniform flow of air through said valvemeans into said intake manifold at all stages of operation of said air motor including the stageof full operation of the air motor and means for limiting the movement of the movable element of said valve means at the stage of non-operation of said ai motor to afford ow of air through said tubing.

3. In combination with an automotive vehicle lhaving an' internal combustion engine provided with a carbureto'r .and an intake manifold lead inv from the carburetor ,to the combustion chamg'ine, of a variable speed air motor provided with intake and outlet ports, tubing connecting the out-take of said air motor with said intake manifold of the internal ber or chambers of the internal combustion env 1 60 combustion engine, and valve f means associated with said air motor for regulating the speed Ioff'saidA air motor, said valve means including means for effecting ow of air through said valve means into said intake mani` including the stage of full operation of the air motor and'means for limiting the movement of j the movable element of said Vvalve means` at the stage of non-operation of said air motor to aord iow of air through said tubing. said valve means fold at all stages of operation of said air motor 

